I had four children at school during chemo and I didn't get sick once. As the others have said, once you know what day of the week you have your chemo, you'll be able to plan.
Your oncologist will tell you when your immune system is at its lowest, when you should be most careful.
If your granddaughter is sick she wouldn't be at childcare I presume, so if you are able to continue collecting her (I didn't drive for a seven to eight days after my infusion as I didn't feel well enough to be in charge of a vehicle), just a bit of extra vigilance should be enough. You could put in a special request to have a staff member bring your granddaughter out so you don't have to step into a gajillion germs. You could use this time to emphasise hygiene with her, a teaching moment if you will! The importance of hand washing, covering your mouth when you sneeze etc.
It might be handy to have a back-up driver who could step in at short notice if you didn't feel up to it, or if your granddaughter needed collecting if she feels unwell.
It's somewhat unknowable at this stage because we can all respond quite differently to the same drugs. Ask your oncologist and be guided by them. K xox
